...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Regional Environmental Change >Energy flows in the coffee plantations of Costa Rica: from traditional to modern systems (1935-2010)
【24h】

Energy flows in the coffee plantations of Costa Rica: from traditional to modern systems (1935-2010)

机译：哥斯达黎加咖啡种植园中的能量流：从传统系统到现代系统（1935-2010）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This article addresses energy flows in the coffee agro-ecosystems of Costa Rica within the context of the socio-ecological transition, between 1935 and 2010, accounting for the shift from traditional to modern tropical agriculture. Estimating indicators of energy efficiency in crop management makes it possible to analyze the changing productive rationality of growers by studying end uses of all biomass appropriated from coffee agro-ecosystems. Coffee land and labor productivity, as expected, multiplied (by factors of 2.01 and 1.56, respectively). However, considering total biomass produced in coffee agro-ecosystems, productivity did not display such a significant increase. In contrast, all other energy efficiency indicators declined. Final energy return on investment (FEROI) fell from 1.02 in 1935 to 0.51 in 2005. External final EROI fell even farther, from 18.90 down to 1.86. The socio-ecological transition brought about the loss of multifunctionality in the final use of products derived from coffee agro-ecosystems, as new products replaced traditional ones.
机译：本文探讨了在1935年至2010年之间的社会生态转型背景下，哥斯达黎加咖啡农业生态系统中的能量流，这说明了从传统到现代热带农业的转变。估算作物管理中的能源效率指标，可以通过研究从咖啡农业生态系统中提炼的所有生物质的最终用途来分析种植者不断变化的生产合理性。正如预期的那样，咖啡用地和劳动生产率成倍增长（分别为2.01和1.56）。但是，考虑到咖啡农业生态系统中产生的总生物量，生产率没有显示出如此大的提高。相反，所有其他能源效率指标均下降。最终能源的投资回报率（FEROI）从1935年的1.02下降到2005年的0.51。外部最终EROI进一步​​下降，从18.90下降到1.86。随着新产品取代传统产品，社会生态转型导致最终使用咖啡农业生态系统产品的多功能性丧失。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号